Top suppliers
Top suppliers to Sellafield
Top-five suppliers hold 99% of contract value — a concentrated market.
Procurement categories
What Sellafield buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
9845797173447248383414Recent contracts
Latest Sellafield contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
DNWP0016/LOT1B/ Windscale Decommissioning and Enabling Works
AtkinsAltrad · 2026-07-22
DNWP0023/LOT4/Waste OU - RCT Redundant Facilities Baseline
AtkinsAltrad · 2026-06-23
DNWP0021/LOT1B/ RROBO Future deployment
AtkinsAltrad · 2026-05-14
£909K
19 Seater Executive Coach
Woodall Nicholson Ltd · 2026-05-14
DNWP0056/LOT1A/ Quaternary Borehole Restoration
AMENTUM CLEAN ENERGY LIMITED · 2026-03-26
DNWP0004/LOT1B/ Alpha Active Demonstrator
AtkinsAltrad · 2026-03-10
eDAR01120 - Alpha Depth Profiling - Feasibility Study
Createc. · 2026-02-19
£27K
DNWP0046/LOT1B/ Alpha SAS ECI (Phase A)
AtkinsAltrad · 2026-02-09
DNWP005.047/LOT2/Asset Care Integrated Task Team
The Decommissioning Alliance II · 2025-12-19
eDAR00458 - Enhanced Communications AD
AtkinsAltrad · 2025-12-09
£31K
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Pipeline
Contracts expiring in the next 12 months
When these contracts end, Sellafield typically re-tenders. SMEs preparing bids 3-6 months ahead win disproportionately often.
19 Seater Executive Coach
Expires: 2026-09-30
DNWP0016/LOT1B/ Windscale Decommissioning and Enabling Works
Expires: 2027-03-31
DNWP0004/LOT1B/ Alpha Active Demonstrator
Expires: 2027-03-31
DNWP0023/LOT4/Waste OU - RCT Redundant Facilities Baseline
Expires: 2027-03-31
DNWP0021/LOT1B/ RROBO Future deployment
Expires: 2027-03-31
£909K
DNWP0056/LOT1A/ Quaternary Borehole Restoration
Expires: 2027-06-30
Design, Manufacture, Supply and Delivery of Radiation Shielding Doors
Expires: 2027-08-15
£21.8M
Market analysis
Bidding into Sellafield — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
11%
Awards to SMEs
99%
Top-5 supplier share
24%
Framework call-offs
—
Awards to social enterprises
Around 11% of Sellafield’s classified awards go to small and medium-sized enterprises. Around 24%of awards are call-offs from framework agreements — getting onto the right framework matters as much as the bid itself here.
Frequently asked
Common questions about selling to Sellafield
How much does Sellafield spend on procurement?
Sellafield awarded 30 contracts totalling £13.6M between 2023-09-15 and 2026-09-15, working with 14 unique suppliers. Average contract value is £907K.
Who are Sellafield's top suppliers?
The largest suppliers to Sellafield by total award value are ADAPT, THOMAS GRAHAM & SONS LTD, AtkinsAltrad. The top five suppliers together hold 99% of contract value.
What does Sellafield buy from suppliers?
Sellafield's procurement is concentrated in other community, social and personal services, construction work, business services: law, marketing, consulting, recruitment, printing and security, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for Sellafield contracts?
Sellafield publishes open tenders on Find a Tender and Contracts Finder. ENKII matches your business against live tenders, identifies certifications you'll need, and surfaces frameworks worth applying to. Free Readiness Score in 3 minutes.
Continue reading
Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
How UK central-government departments evaluate suppliers at the pre-qualification stage.
GUIDE
Cyber Essentials — for government contracts
Most central-government contracts handling personal data require this certification.
SECTOR
UK Government IT Services
G-Cloud, DOS, Crown Commercial frameworks. Software + consultancy is Sellafield's largest spend area.
INDEX
All UK public-sector buyers
Browse procurement profiles for every UK government department and major buyer.
Sources & methodology
How this profile is compiled
Analysed by ENKII · Updated 2026-09-15
This profile aggregates public-record procurement data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and aggregates source records; we don't edit the underlying facts.
Source portals
- · Find a Tender (find-tender.service.gov.uk)
- · Contracts Finder
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.